Question

divide the sum of -2/9 and 7/-3 by the reciprocal of the difference of 1/7 and -2/-21 ?​

Answer 1

Step-by-step explanation:

sum = (-2)/9 + 7/(-3) = ???

difference = 1/7 - (-2)/(-21)= ???

divide = sum ÷ difference = ??? Ans

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Answer 2

Step-by-step explanation:

=(x+y)(x+y)

=x(x+y)+y(x+y)

=x²+xy+xy+y²

=x²+2xy+y²

This is the correct answer x²+2xy+y²

proof:

=x²+2xy+y²

=x²+xy+xy+y²

=(x+y)(x+y)